Communication system, master station device, and communication control method

Abstract

A communication system according to one embodiment manages wireless communication via an antenna capable of communicating with a plurality of terminals within a predetermined area. The communication system includes an analyzer and a controller. The analyzer is configured to analyze first information and second information and to specify an uncommunicable terminal from the terminals based on an analysis result. The first information is information registered in advance as positional information of the terminals within the predetermined area. The second information is predetermined information acquirable from the terminals. The uncommunicable terminal is a terminal located at a position where communication with the antenna is not possible. The controller is configured to perform antenna control of controlling at least one of an output and orientation of the antenna when there is the uncommunicable terminal, so that the uncommunicable terminal enters a state in which the communication with the antenna is possible.

1 . A communication system that is configured to manage wireless communication via an antenna capable of communicating with a plurality of terminals within a predetermined area, the communication system comprising:
 an analyzer configured to analyze first information and second information and to specify an uncommunicable terminal from the terminals based on an analysis result, the first information being information registered in advance as positional information of the terminals within the predetermined area, the second information being predetermined information acquirable from the terminals, the uncommunicable terminal being a terminal located at a position where communication with the antenna is not possible; and   a controller configured to perform antenna control of controlling at least one of an output and orientation of the antenna when there is the uncommunicable terminal, so that the uncommunicable terminal enters a state in which the communication with the antenna is possible.   
     
     
         2 . The communication system according to  claim 1 , wherein
 the controller repeatedly performs the antenna control at a predetermined time interval.   
     
     
         3 . The communication system according to  claim 2 , wherein
 the predetermined time interval is set to have a value equal to or greater than a sum of an initial connection time and a communication ensuring time, the initial connection time being a time necessary to establish the wireless communication with the antenna after the uncommunicable terminal enters the state in which the communication with the antenna is possible, the communication ensuring time being a predetermined time ensured after the uncommunicable terminal enters the state in which the communication with the antenna is possible.   
     
     
         4 . The communication system according to  claim 1 , further comprising
 an identifier configured to identify, when there is a plurality of antennas, a control target antenna which is a target of the antenna control from among the antennas by use of information regarding the uncommunicable terminal.   
     
     
         5 . The communication system according to  claim 4 , wherein
 the identifier is configured to identify an antenna at a position closest to the uncommunicable terminal as the control target antenna from among the antennas by use of positional information of the uncommunicable terminal and positional information of the antennas.   
     
     
         6 . The communication system according to  claim 4 , wherein
 when the number of uncommunicable terminals in a case where the antenna control is performed on an antenna randomly selected from among the antennas is equal to or less than the number of uncommunicable terminals before the antenna control is performed on the randomly selected antenna, the identifier is configured to identify the randomly selected antenna as the control target antenna.   
     
     
         7 . The communication system according to  claim 1 , further comprising:
 a master station device; and   a slave station device that is connected to the master station device and comprises the antenna, wherein   the analyzer and the controller are comprised in at least one of the master station device and the slave station device.   
     
     
         8 . The communication system according to  claim 1 , further comprising:
 a master station device;   a slave station device that is connected to the master station device and comprises the antenna; and   a server device that is connected to the master station device via a network and configured to manage the first information, wherein   the analyzer and the controller are comprised in at least one of the master station device, the slave station device, and the server device.   
     
     
         9 . A master station device that is connected to a slave station device including an antenna capable of communicating with a plurality of terminals within a predetermined area, the master station device comprising:
 an analyzer configured to analyze first information and second information and to specify an uncommunicable terminal from the terminals based on an analysis result, the first information being information registered in advance as positional information of the terminals within the predetermined area, the second information being predetermined information acquirable from the terminals, the uncommunicable terminal being a terminal located at a position where communication with the antenna is not possible; and   a controller configured to perform antenna control of controlling at least one of an output and orientation of the antenna when there is the uncommunicable terminal, so that the uncommunicable terminal enters a state in which the communication with the antenna is possible.   
     
     
         10 . A communication control method that is performed by a communication system configured to manage wireless communication via an antenna capable of communicating with a plurality of terminals within a predetermined area, the method comprising:
 analyzing first information and second information, the first information being information registered in advance as positional information of the terminals within the predetermined area, the second information being predetermined information acquirable from the terminals;   specifying an uncommunicable terminal from the terminals based on an analysis result, the uncommunicable terminal being a terminal located at a position where communication with the antenna is not possible; and   performing antenna control of controlling at least one of an output and orientation of the antenna when there is the uncommunicable terminal, so that the uncommunicable terminal enters a state in which the communication with the antenna is possible.   
     
     
         11 . The communication control method according to  claim 10 , wherein
 the antenna control is repeatedly performed at a predetermined time interval.   
     
     
         12 . The communication control method according to  claim 11 , wherein
 the predetermined time interval is set to have a value equal to or greater than a sum of an initial connection time and a communication ensuring time, the initial connection time being a time necessary to establish the wireless communication with the antenna after the uncommunicable terminal enters the state in which the communication with the antenna is possible, the communication ensuring time being a predetermined time ensured after the uncommunicable terminal enters the state in which the communication with the antenna is possible.   
     
     
         13 . The communication control method according to  claim 10 , further comprising
 identifying, when there is a plurality of antennas, a control target antenna which is a target of the antenna control from among a plurality of antennas by use of information regarding the uncommunicable terminal.   
     
     
         14 . The communication control method according to  claim 13 , wherein
 an antenna at a position closest to the uncommunicable terminal is identified as the control target antenna from among the antennas by use of positional information of the uncommunicable terminal and positional information of the of antennas.   
     
     
         15 . The communication control method according to  claim 13 , wherein
 when the number of uncommunicable terminals in a case where the antenna control is performed on an antenna randomly selected from among the antennas is equal to or less than the number of uncommunicable terminals before the antenna control is performed on the randomly selected antenna, the randomly selected antenna is identified as the control target antenna.